Broomfield, CO (Zone 5b) | February 2008 | positive
From your friends at Botanical Interests, Inc: "Artichokes are easy grow in any climate if you have the space. (Green Globe Improved gets...Read More 5' tall and 8' wide, hardy to USDA zones 5-6 with protection. Purple of Romagna gets 6' tall and 8' wide, hardy to USDA zones 8-9). The secret is to start them indoors very early, so they will have enough time to form buds. Green Globe Improved is a selection of the popular heirloom Green Globe and does well in shorter seasons. Purple of Romagna is an Italian heirloom that is coveted by chefs for its color and tenderness. The hardest part will be deciding whether to grow them to eat or for their ornamental architectural beauty in the garden! When to start outdoors: Cold Climates: Not recommended. Warm Climates: Sow in fall for harvest the following spring. When to start indoors: Cold Climates: Sow in 4" pots 12 weeks before your average last spring frost date. Transplant outside after average last frost date. Warm Climates: Sow in 4" pots in early fall. Transplant outdoors 6 weeks before average first frost date."
Early producer. Some individuals deeper purple than others--can be nearly black.
From your friends at Botanical Interests, Inc: "Artichokes are easy grow in any climate if you have the space. (Green Globe Improved gets...Read More